The lumboinguinal nerve (femoral or crural branch of genitofemoral) descends on the external iliac artery, sending a few filaments around it, and, passing beneath the inguinal ligament, enters the sheath of the femoral vessels, lying superficial and lateral to the femoral artery.

It pierces the anterior layer of the sheath of the vessels and the fascia lata, and supplies the skin of the anterior surface of the upper part of the thigh.

On the front of the thigh it communicates with the anterior cutaneous branches of the femoral nerve.

A few filaments from the lumboinguinal nerve may be traced to the femoral artery.

Additional images

Structures passing behind the inguinal ligament.

Diagram of segmental distribution of the cutaneous nerves of the right lower extremity. Front view.

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.